Bike Washing Machine: stationary bike washing clothes.
Under a project of industrial design and engineering, a group of students from the University Dalian Nationalities in China have created an interesting device that links the sometimes tedious task of washing clothes and doing exercise using a stationary bike.
The project is called BWM Bike Washing Machine, and combines two seemingly unrelated activities in a single device. This bike instead of front wheel have a small drum washing machine, which has a capacity of up to five kilograms of clothing complete with drainage system, the only detail is that we have to carry clothes, water and detergent addition softener.
The idea is EXTREMELY simple, as the drum rotates while pedaling the bike, but also has an additional feature, since pedaling, the movement will generate energy, which can be used to charge devices, feeding a screen that shows our progress in bike, or store it for later.
This is just a student project and so far there are no plans to create a commercial product, but its creators are convinced that some companies may be interested in developing it as well as improve and integrate new elements and features.
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Soviet (Russian) Army used such bike devices since 1930 and in the World War II (1941-1945) to power radiotransmitters. They were called "soldat-motor" (soldier-motor)
According to TechSpecs they were capable to generate up to 235V with 37% efficiency. Not bad.